Improvement in carriage-shackles



UNITED STATES PATENT OFFICE.

WILSON W. KNOWLES, OF SOUTHINGTON, CONN., ASSIGNOR TO HIMSELF, JULIUS B.SAVAGE, AND WILLIS B. SMITH, OF SAME PLACE.

IMPROVEM ENT IN CARRIAGE-SHACKLES.

Specification forming part of Letters Patent No. 54,253, dated April 24,1866.

To all 'whom it may concern:

Be it known that I, WILSON W. KNoWLEs, of Southington, in the county ofHartford and State of Connecticut, have invented a new and usefulImprovement in Carriage-Shackles; and I do hereby declare the following,when taken in connection with the accompanying drawings and the lettersof reference marked thereon, to be a full, clear, and exact descriptionof the same, and which said drawings constitute part ot' thisspecification, and represent, in-

Figure 1, a side view of a shackle completed for market; Fig. 2, an endView of the same; Fig. 3, a top view of that part ot' the shackle uponwhich my improvement is made; Fig. 4, a section of the same on line xm,- Fig. 5, a top view ot' the shackle further advanced towardcompletion, and in Fig. 6 a section of the same on line z z. i

Heretofore, in the construction of the shackle and its attachment to theclip, the shackle has been partially formed; then the clip-bar, or barof iron from which the clip was to be formed, was placed upon theshackle andlrml y riyeted thereto, then heated and forged to the propershape. The operation of riveting` adds much to the cost of manufacture,yet itis necessary in some manner to secure the shackle to the clipbefore the two-parts can be welded together and theshackle completed. Todo this at less expense and equally as good, if not better, is theobject of my invention, which consists in forming the shackle at thatstage of its construction when it is required to attach it to theclip-bar, so as to lock onto the said bar and hold sufficiently strong.for the purpose required.

To enable others skilled in the art to construct and use my improvement,I will proceed to describe the same as illustrated in the accompanyingdrawings.

A is the shackle-piece, first formed inthe usual manner to receive theclip-bar upon the upper sideof the said bar, and at the same time theindentation B is formed to receive the clip-bar I turn the two edges a ainward by making iudenta-tions d upon the upper surface of the clip, asseen in Figs. 3 and 4, then force the clip-bar endwise into the saidindentation B, the two hooked sides a a holding on to the barsufficiently strong to retain it in its proper position, then in theusual manner forge the clip O, with the shackle A, into the form seen inFigs. 5 and 6, thence to that seen in Figs. l and 2, and my shackle iscomplete.

lIhe hooks e t heilig formed at the same time that the indentation B isintroduced, no additional expenseis incurred, and th usI avoid theexpense of riveting, as heretofore, and am enabled to produce a shackleof more finished appearance, as no evidence of a rivet appears, `whichit is impossible to obliterate in the shackle as heretofore constructed.

Having therefore thus fully described myv improvement, what Iclaiin asnew and useful, and desire to secure by Letters Patent, is-

Constructing the shackle to receive the clipbar, substantiallyas and forthe purpose herein set forth.

wILsoN W. KNovvLEs.

Witnesses:

SIMEON H. NORTON, SARAH E. NORTON.

